وَجَاءُوا أَبَاهُمْ عِشَاءً يَبْكُونَ
They came to their father at night, weeping.
Quran example - Surah Yusuf 12:16
- جَاءُوا is the main event.
- يَبْكُونَ is a verbal sentence describing their condition while coming.
- The plural subject contained in يَبْكُونَ refers back to those who came and forms the link.
So a verbal sentence can function as haal when its connection is clear.